211214321 has 4 divisors (see below), whose sum is σ = 213888000. Its totient is φ = 208540644.

The previous prime is 211214291. The next prime is 211214357. The reversal of 211214321 is 123412112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211214321 - 2¹⁰ = 211213297 is a prime.

It is a super-2 number, since 2×211214321² = 89222978790982082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211214321.

It is not an unprimeable number, because it can be changed into a prime (211214371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1336721 + ... + 1336878.

It is an arithmetic number, because the mean of its divisors is an integer number (53472000).

Almost surely, 2^211214321 is an apocalyptic number.

It is an amenable number.

211214321 is a deficient number, since it is larger than the sum of its proper divisors (2673679).

211214321 is an equidigital number, since it uses as much as digits as its factorization.

211214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673678.

The product of its digits is 96, while the sum is 17.

The square root of 211214321 is about 14533.2144070058. The cubic root of 211214321 is about 595.5356812209.

Adding to 211214321 its reverse (123412112), we get a palindrome (334626433).

The spelling of 211214321 in words is "two hundred eleven million, two hundred fourteen thousand, three hundred twenty-one".